U.S. patent number 7,213,485 [Application Number 11/099,591] was granted by the patent office on 2007-05-08 for bicycle assistive handlebar structure.
Invention is credited to Yuan-Hsin Huang.
United States Patent |
7,213,485 |
Huang |
May 8, 2007 |
Bicycle assistive handlebar structure
Abstract
A bicycle assistive handlebar structure installed at the
anterior extent of a front fork stem, stem clamp mount that serves
as a means of conjoinment. The stem clamp mount consists of a
concave section and a threaded hole that provides for the fastening
of bolts inserted via four through-holes. Furthermore, a vertical
coupling passage is disposed through the installation crown,
thereby providing for the horizontal arrangement of a handlebar in
a connective mounting shank. The two sides of a transverse rod
provides for the fitting into position of insertion sleeves, and an
elongated hole provides for the stationary seating into the
connective mounting shank elongated hole. Radial splines are
respectively fabricated along the outer sides of the joint mount
and the inner sides of an assistive handlebar. As such, the present
invention provides the rider variable adjustment operation over
upper and lower height, forward and backward distance, and rotative
direction.
Inventors: |
Huang; Yuan-Hsin (Changhua,
TW) |
Family
ID: |
37107188 |
Appl.
No.: |
11/099,591 |
Filed: |
April 6, 2005 |
Prior Publication Data
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Document
Identifier |
Publication Date |
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US 20060230872 A1 |
Oct 19, 2006 |
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Current U.S.
Class: |
74/551.8;
74/551.1; 74/551.3; 74/551.9; 74/557 |
Current CPC
Class: |
B62K
21/125 (20130101); Y10T 74/2078 (20150115); Y10T
74/20828 (20150115); Y10T 74/20864 (20150115); Y10T
74/20822 (20150115); Y10T 74/20792 (20150115) |
Current International
Class: |
B62K
21/12 (20060101) |
Field of
Search: |
;74/551.1,551.3,551.4,551.6,551.8,551.9,543,544,551.2,551.5,551.7
;280/278,287,288.4 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Ridley; Richard
Assistant Examiner: Johnson; Matthew A.
Attorney, Agent or Firm: Rabin & Berdo, P.C.
Claims
The invention claimed is:
1. A bicycle handlebar structure, comprising: a stem clamp mount
that is attachable to a front fork stem, and including a concave
section having four corners, with a threaded hole being provided at
each of the four corners; a handle bar that is received in the
concave section; an installation crown that has four through-holes,
each being disposed in alignment with a respective one of the
threaded holes, and being fastenable to said stem clamp mount using
bolts that are insertable into the respective through-holes and
threadably engaged with the respective threaded holes to clamp the
handle bar between said installation crown and the concave section
of said stem clamp, said installation crown further having a
vertical coupling passage having a breach formed along a side
thereof, the breach having a perforated lug situated at each of its
two sides; a connective mounting member, having: a horizontal
connective mounting shank having an elongated hole at a front end
thereof; a vertical rod attached to a rear end of said connective
mounting shaft, said vertical rod being insertable in the vertical
coupling passage, said vertical rod being clamped in the vertical
coupling passage using a bolt that is insertable through the
perforated lugs, said vertical rod being adjustable in a vertical
direction; a transverse rod attached to the rear end of said
connective mounting shaft; and two forearm support bases, each
having an insertion sleeve at a bottom thereof, each insertion
sleeve being attached to a respective end of said transverse rod; a
joint mount slidably disposed on said connective mounting shank,
said joint mount being adjustable in a horizontal direction using a
screw that is inserted through the elongated hole and fastened into
the joint mount to preclude movement or facilitate variable
adjustment to a front or rear according to a length of a user's
arms, said joint mount having radial splines respectively formed at
outer sides thereof; and two assistive handle bars, each having
radial splines at an end thereof which mesh with the radial splines
on a respective side of said joint mount, said assistive handle
bars being angularly adjustable using a bolt that extends through
the respective handle bar and into the joint member to thereby hold
said assistive handle bars at a desired angular position.
Description
BACKGROUND OF THE INVENTION
1) Field of the Invention
The invention herein relates to a bicycle assistive handlebar
structure in which a connective mounting shank of assistive
handlebars is installed in the handlebars, with the handlebars then
being centrally positioned between an installation crown and a
front fork stem, stem clamp mount, enabling the rider variable
adjustment operation as needed over upper and lower height, forward
and backward distance, and rotative direction to thereby achieve
the most suitable grasping posture.
2) Field of the Invention
Conventional bicycle handlebars that accommodate the installation
of assistive handlebars are typically designs that enable
stationary positioning. However, when another rider mounts such a
bicycle and wants to use the permanently positioned assistive
handlebars, different riders experience discomfort which not only
fails to meet the objective of assistive grasping but also results
in manual obstruction and utilization difficulty.
SUMMARY OF THE INVENTION
As a result, the applicant of the invention herein developed the
specialized bicycle assistive handlebar structure of the present
invention.
The primary objective of the invention herein is to provide a
bicycle assistive handlebar structure installed at the anterior
extent of a front fork stem, stem clamp mount that serves as a
means of conjoinment having an integrated installation crown in
which variously shaped handlebars are positioned. The stem clamp
mount consists of a concave section and a threaded hole at each of
its four corners that provides for the fastening of bolts inserted
via four through-holes of an integrated installation crown that is
thereby brought into a clamped position. Furthermore, a vertical
coupling passage is disposed through the installation crown,
thereby providing for the horizontal arrangement of a handlebar in
a connective mounting shank after the vertical rod at its lower end
is inserted such that the vertical rod of the connective mounting
shank in the horizontally arranged handlebar is adjusted up or down
to set the height. The two sides of a transverse rod in the
connective mounting shank provides for the fitting into position of
insertion sleeves at the lower end of a forearm support base and an
elongated hole is reticulated at the front end of the connective
mounting shank that provides for the stationary seating of a joint
mount into the connective mounting shank elongated hole. Radial
splines are respectively fabricated along the outer sides of the
joint mount and the inner sides of an assistive handlebar and the
angle of the assistive handlebars are varied by turning. As such,
the rider achieves the most suitable grasping posture.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an exploded drawing of the invention herein.
FIG. 2-A is an isometric drawing of the connective mounting shank
of the invention herein moved downward.
FIG. 2-B is an isometric drawing of the connective mounting shank
of the invention herein moved upward.
FIG. 3-A is an isometric drawing of the assistive handlebars of the
invention herein moved towards the rear.
FIG. 3-B is an isometric drawing of the assistive handlebars of the
invention herein moved towards the front.
FIG. 4-A is an orthographic drawing of the assistive handlebars of
the invention herein when stationary.
FIG. 4-B is an orthographic drawing of the assistive handlebar of
the invention herein when turned for variation.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIG. 1, the bicycle assistive handlebar structure of
the invention herein is installed at the anterior extent of a stem
clamp mount 1 attached to a front fork stem 1A. The stem clamp
mount 1 serves as a means of conjoinment. The stem clamp mount 1
includes a concave section 11 and a threaded hole 12 at each of its
four corners that provides for the fastening of bolts 2A inserted
via four through-holes 211 of an integrated installation crown 21
to secure variously shaped handlebars 2. Variously shaped
handlebars 2 are positioned in the integrated installation crown 21
and, furthermore, a vertical coupling passage 22 is disposed
through the installation crown 21. The coupling passage 22 has a
breach 221 formed along the one side, with the breach 221 having a
perforated lug 222 situated at each of its two sides, thereby
providing for the horizontal arrangement of a handlebar 2 in a
connective mounting shank 3 after the insertion of its vertical rod
31, following which bolts 2B are inserted through the two
perforated lugs 222 and the breach 221 is fastened tightly
together. The two sides of a transverse rod 32 in the connective
mounting shank 3 of a connective mounting member provides for the
fitting into position of insertion sleeves 41 at the lower end of a
forearm support base 4 and an elongated hole 33 is reticulated at
the front end of the connective mounting shank 3 that provides for
the seating of a joint mount 5 into the connective mounting shank 3
elongated hole 33 . Screws 6A are inserted through the elongated
hole 33 and fastened into the joint mount 5 to preclude movement.
Radial splines 51 and 61 are respectively fabricated along the
outer sides of the joint mount 5 and the inner sides of an
assistive handlebar 6 and the splines 61 at the inner side of the
two assistive handlebars 6 and splines 51 at the outer sides of
joint mount 5 are fastened into engagement by a screw 5A.
As such, when the rider wants to use the assistive handlebars 6,
the vertical rod 31 of the connective mounting member in the
horizontally arranged handlebar 2 is adjusted up or down to set the
height (as shown in FIG. 2-A and FIG. 2-B). Since the elongated
hole 33 at the front end of the connective mounting shank 3 is
utilized to variably move the joint mount 5 that Image Page 3
secures the assistive handlebars 6 forward or backward (as shown in
FIG. 3-A and FIG. 3-B), by slightly loosening the screw 5A
fastening the joint mount 5 and the assistive handlebars 6 into an
originally fixed state (as shown in FIG. 4-A), the assistive
handlebars 6 are turned to the desired angle following which they
are fixed once again (as shown in FIG. 4-B), thereby providing
different riders the most suitable grasping posture during bicycle
riding.
In summation of the foregoing section, since the invention herein
provides for rapid, convenient, and easy installation as well as
optimal grasping, the present invention meets the application
requirements stipulated by Article 93 of the new patent law and is
submitted to the patent bureau for review and the granting of the
commensurate patent rights.
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